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sci.orbital-velocity-escape-velocity Calculator
Calculates orbital velocity v = √(GM/r) and escape velocity v_e = √(2GM/r) at distance r from a central body. ISS orbital velocity at 408 km altitude = 7.66 km/s — escape velocity from Earth's surface = 11.2 km/s.
Inputs
R Km
Distance from centre to edge of a circle. Radius = diameter / 2.
M Kg
Total mass of the body. Used with height to calculate BMI and estimate lean mass.
Alt Km
Reference formula or conversion factor shown for context.
Results
circular orbital velocity (km/s)
Reference formula or conversion factor shown for context.
escape velocity (km/s)
Reference formula or conversion factor shown for context.
orbital velocity at altitude (km/s)
The value at the specified point or condition.
orbital period (hours)
The result expressed in hours. Divide by 24 to convert to days.
v_circ = √(GM/r) | v_esc = √(2GM/r) = √2 · v_circ
Reference formula or conversion factor shown for context.